BERYL
Chemicalcomposition-Be3AlSiO6
Color-Green,blue,blue-green,yellow,pink,purple,red,brown,colorless,andwhite
Hardness-7½-
8
SG-2.6-
2.8
Cleavage-3,1
RI-1.576-
1.582
DR-.006
Luster-Vitreous
TransparencyTransparenttoopaque
FractureUneventoconchoidal
USES-Allthe
varieties
are
faceted
in to
various
gem
cuts
,and
somestones
display
as terism
and cat's
eye
effect
when
cut
and
polishedinto
cabochons
.Ornamental
figures
are
sometimes
carved
from
massive
chunks
oft
ransparent
beryl,
usually
from
morganite
and
heliodor.Perfect,
transparent,
ix-sided
crystals
are
occasionally
worn
as necklace
pendant
sinanun
cut state.
PICTURES
Blue
Beryl
Peach
Beryl (Morganite)
Colorless
Goshenite
Pink
Morganite
Red
Beryl
Green
Beryl